Metallic wash-board plate



(Model.)

M. H. FARNSWORTH.

METALLIC WASHBOARD PLATE. L No. 258,396. Patented May 23,188.2.r

UNTTD STATES PATENT Carien.

MARSHALL H. FARNSVORTH, OF BROOKLYN, ASSIGNOR TO THE OHIO WOODEN VAREMANUFACTURING COMPANY, OF CLEVELAND, OHIO.

METALLIC WASH=BOARD PLATE.

SPECIFICATION forming part of Letters Patent No. 258,396, dated May 23,1882,

Application filed October 8, 1881.

T 0 all whom it may concern:

Be it known that I, MARSHALL H. Farms- WORTH, of Brooklyn village, inthe county of Cuyahoga and State of Ohio, have invented a certain newand Improved Metallic Wash- Board Plate; and l do hereby declare thatthe following is afull, clear, and com plete description thereof.

My improvement; relates to a metallic plate 1o for wash-boards; and itconsists in the construction ofthe plate with a series ot'peculiarly-formed corrngations with angular swells and depressionsalternating upon the said corrugations, the angles being in oppositedireci5 tions to each other obliquely across the plate.

Fora fuller and more complete description of the said plate referencewill be had to the following specification and to the annexed drawings,making a part ot' the same, in which- Figure 1 is a face view of theplate; Fig. 2, a side edge view, and Fig. 3 a transverse section. in thedirection ot' the line 0r a: in Fig.

Like letters of reference refer to like parts in the several views.

The improved plate is preferably made ot' sheet-zinc, and is adapted tothe ordinary wash-board frame, to which it may be secured in the usualway, or otherwise. Transverselyupon the face of the plate are a seriesof corrugations, A, Fig. l, and ou the side edges are formed crimps, asseen on one side at B, an edge view ot' which is shown in Fig. 2. Thiscrimping of the side B is to take out the buckle and swell caused inshaping the plate and to give a uniform edge to the plate for fittinginto the side pieces. The conformation of the plate may be effected byeither dies or vrollers suitably formed and shaped for this purpose.Rollers are preferred, as this form 4o of plate can be made by rollingwith facilityr without sufficient strain to break or crack the plate inpassing through the rollers, which is a great saving and advantage tothe washboa-rd.

It will be seen in Figs. l and 3 that the transverse corrugations orridges partake of an angular form, the faces of which are broader thanthe depressions and parallel, or nearly (Model.)

so, to each other. Upon the face ofthe ridges are a series of angulardepressions from a to 5o b, with projections or swells at c, and slopingdown to bin the channel d, formed between the ridges or corrugations.These angular depressions c b and projections c are formed on thebroadest surface ot' the ridges A, eX 55 tending from f to g, whilethc'narrow and depressed portion ot' the corrugations extends only fromh to i, as shown in Figs. l and 2. Between the depressions a are swellsor projections e, causing alternate depressions a and 6o projections ealong the ridges A. It will be noted in Fig. l that the angularpositions'ot' the depressions a b and inclined sides thereof are. in twodiagonal directions in opposite lines, as indicated by the lilies C Cand D D. There are also alternate projections or ridges and depressionslongitudinally as well as transversely over the face of'the board, aswill be seen in Fig. 1. The depressions c are in a longitudinal linewith the ridges at A 7o and projections c at the angle ot' depression ab. Hence there are ascries of projections and angular depressions atright angles to each other across the plate and longitudinally. Thecorrugations across the board act upon the 7 5 clothesbeing rubbed inone direction only and uniformly. Conjointly therewith the obliqueswells and depressions in the face of the corrugations act upon theclothes in a crosswise direction, and by their peculiar` shape 8o loosenup the articles being rubbed, so that the dirt is freely washed out bythe waterhaving free access to the article loosened up by the swells anddepressions crossing the corrugations.

The plate for use is preferable in the position shown in Fig. l,although the opposite side may be used. The swell and depression on theface in Fig. l show the reverse forms. on the opposite side of theplate.

What I claim as my invention, and desire to secure by Letters Patent, is

A metallic wash-board plate having a series ot' transverse angularcorrugations, A, the faces of which are traversed by a series of obliqueor downward-diverging depressions,

a, with continent upper ends, in the angle of' In testimony whereof Ioix my signature in which are projections or swells c, sloping downpresence of two witnesses.

to the channels between the transverse corrugations, and having betweenthe said series MARSHALL H. FARNS\VORTH. of oblique depressions orgrooves swells or l projections e, causing alternating swells andWitnesses:

depressions along iu the face of said eorrugn- J. H. BURRIDGE,

tions A, substantially as described. l V. H. BURRIDGE.

